patch 8.2.2961: keys typed during a :normal command are discarded

Problem:    Keys typed during a :normal command are discarded.
Solution:   Concatenate saved typeahead and typed kesy. (closes #8340)
diff --git a/src/evalfunc.c b/src/evalfunc.c
index d08cf43..97f7b61 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -5873,7 +5873,7 @@
     {
 	--ga_userinput.ga_len;
 	restore_typeahead((tasave_T *)(ga_userinput.ga_data)
-						       + ga_userinput.ga_len);
+						  + ga_userinput.ga_len, TRUE);
 	// default return is zero == OK
     }
     else if (p_verbose > 1)